Using SMTP with WordPress
I was asked to change my plugins so they can send email with SMTP than the internal PHP mail() function. So I patched them all to use the mailing function of WordPress (which use PHP mail() by default).
WordPress mailing method can be modified installing one fo the many plugins which configure it to use and external SMTP server.
I'm Stefano Lissa. 10 years ago I was building web sites for my pleasure. Blogs didn't exist, web content systems were ugly, hosting really expensive. And my student pocket was empty.